> For the complete documentation index, see [llms.txt](https://messier.gitbook.io/catalogue-de-messier/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://messier.gitbook.io/catalogue-de-messier/messier-applications/horizon.md).

# Horizon

<figure><img src="/files/fPkSJqUQReO03Bt381H1" alt=""><figcaption></figcaption></figure>

**Horizon** is a zk-SNARK–based decentralized application, purpose-built to enable **private cryptocurrency transactions with compliance by default**.

Horizon allows users to deposit and withdraw digital assets anonymously while enforcing strict safeguards against illicit activity. Unlike traditional crypto mixers, Horizon is engineered as a **regulated-grade privacy layer**, designed to remain sustainable in modern regulatory environments.

The protocol has been fully developed with compliance controls to prevent misuse such as laundering stolen or sanctioned funds.

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### Core Principles

* **Privacy by design**
* **Compliance by default**
* **No KYC**
* **Non-custodial**
* **Auditability without de-anonymization**
* **Protection against illicit use**